(57) A mobile telephone usable both as a portable and as an installed telephone, capable
of saving battery power when used as a portable telephone, and safely starting up
voice-dialing when used as an installed telephone. Discriminating circuit (3, 3A,
14) discriminates which use the telephone is now in, portable or installed. In the
former use, start-up circuit (7, 15) is manually activated to supply power from battery
pack (1) to voice-dialing unit (8). The power supply is cut off in response to reset
signal R supplied from the voice-dialing unit when voice-dialing ends. In the latter
use, voice-dialing unit is kept switched on to the vehicle battery and ready for start-up
in response to voice input.
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